Ten copies of the UAS regulatory sequence drive expression of a deleted robo2 coding sequence (lacks amino acid residues 281-1463, numbering according to GenBank AAF51375) which is tagged at the N-terminal end with three copies of the Tag:HA tag. 5'UTR and signal sequences from the wg gene are also present.
Expression of robo2ΔIg2.10xScer\UAS.T:Ivir\HA1,T:SS-wg under the control of Scer\GAL4eg-Mz360 in embryos results in 74% of EW neurons failing to cross the midline.
Expression of robo2ΔIg2.10xScer\UAS.T:Ivir\HA1,T:SS-wg under the control of Scer\GAL4sli.PS in embryos does not result in ectopic crossing of the midline by Fas2-positive axons.
robo2ΔIg2.10xUAS.Tag:HA,Tag:SS(wg)/Scer\GAL4elav.PLu is a non-suppressor of abnormal neuroanatomy phenotype of commΔe39
robo2ΔIg2.10xUAS.Tag:HA,Tag:SS(wg)/Scer\GAL4elav.PLu is a non-suppressor of symmetrical commissure phenotype of commΔe39
Expression of robo2ΔIg2.10xScer\UAS.T:Ivir\HA1,T:SS-wg under the control of Scer\GAL4elav.PLu does not suppress the loss of commissure phenotype of homozygous commE39 embryos.